Imported from HackLordMonster062/Lets-Touch-Grass-2D (Packages/com.playgama.bridge/AGENTS.md). Install upstream with npx skills add HackLordMonster062/Lets-Touch-Grass-2D --skill com.playgama.bridge. Copyright stays with the author.

Project Playgama Bridge Unity

Playgama Bridge Unity is a cross-platform SDK for publishing HTML5 games to many web platforms (Playgama, Crazy Games, Yandex Games, Poki, Facebook Instant Games, Telegram, VK, Discord, etc.). It's a Unity Package Manager (UPM) package requiring Unity 2022.3+.

Build & Development

This is a Unity plugin - there are no CLI build commands. Development workflow:

• Open project in Unity Editor
• Access Bridge tools via Playgama > Bridge menu
• Install template files via Playgama > Install Template Files
• Build for WebGL using Unity's standard build pipeline

Assembly definitions:

• Playgama.Bridge - Runtime code (all platforms)
• Playgama.Bridge.Editor - Editor tools (Editor platform only)

Architecture

Module System

The SDK uses a singleton-based module architecture. Entry point is Bridge.cs which exposes modules as static properties:

Bridge.advertisement   // Ads: Banner, Interstitial, Rewarded
Bridge.storage         // LocalStorage/SessionStorage persistence
Bridge.player          // Player authorization & info
Bridge.platform        // Platform detection & messaging
Bridge.device          // Device info & safe areas
Bridge.leaderboard     // Leaderboard management
Bridge.payments        // Payment processing
Bridge.achievements    // Achievements
Bridge.remoteConfig    // Remote configuration
Bridge.social          // Social features

C#/JavaScript Interop Pattern

The bridge uses a three-layer architecture:

1. C# Modules (Runtime/Scripts/Modules/) - Public API consumed by game developers
2. JavaScript Plugin (Runtime/Plugins/PlaygamaBridge.jslib) - DllImport("__Internal") exports for browser APIs
3. JavaScript Library (Runtime/WebGLTemplates/Bridge/playgama-bridge.js) - Platform abstraction layer

Conditional Compilation Strategy

#if UNITY_WEBGL
    #if !UNITY_EDITOR
        // Actual JavaScript interop (WebGL builds only)
    #else
        // Mock implementations for Editor testing
    #endif
#endif

This pattern ensures:

• Non-WebGL platforms skip bridge code
• Editor has mock implementations for development without deploying
• WebGL builds use actual JavaScript bridge

Namespace Structure

Playgama
├── Common                    // Singleton<T>, JsonHelper
├── Modules.Advertisement
├── Modules.Device
├── Modules.Leaderboards
├── Modules.Payments
├── Modules.Achievements
├── Modules.Platform
├── Modules.Player
├── Modules.RemoteConfig
├── Modules.Social
├── Modules.Storage
├── Debug                     // Editor-only debug window
└── Editor                    // Editor tools & optimization

Key Files

• Bridge.cs - Main entry point, initializes all modules
• PlaygamaBridge.jslib - JavaScript interop definitions
• BridgeWindow.cs - Main editor window with optimization tabs
• playgama-bridge-config.json - Platform configuration schema

Editor Tools

The Playgama > Bridge window provides:

• Build summary analysis (size breakdown)
• Texture optimization (ASTC/ETC2 compression)
• Audio optimization
• Mesh optimization
• Shader analysis
• First-run setup auto-detection via Library/PlaygamaBridge.version

External Resources

• Documentation
• Unity Examples
• JavaScript Bridge